Question HelpA poll of 2,055 randomly selected adults showed that 89% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as anapproximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e).Test of p = 0.91 vs p 0.91Sample XSample p95% CIZ-ValueP-Value118282,0550.889538(0.871726,0.907349)- 3.240.001O C. Ho: p 0.91O D. Ho: p>0.91Choose the correct answer below.O A. Reject the null hypothesis because the P-value is greater than the significance level, a.B. Fail to reject the null hypothesis because the P-value is greater than the significance level, a.O C. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a.O D. Reject the null hypothesis because the P-value is less than or equal to the significance level, a.e. What is the final conclusion?O A. There is not sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.B. There is sufficient evidence to support the claim that 91% of adults own a cell phone.O C. There is sufficient evidence to warrant rejection of the claim that 91% of adults own a cell phone.O D. There is not sufficient evidence to support the claim that 91% of adults own a cell phone. A poll of 2,055 randomly selected adults showed that 89% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as anapproximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e).Test of p 0.91 vs p 0.91Sample XSample p95% CIZ-ValueP-Value118282,0550.889538(0.871726,0.907349)- 3.240.001a. Is the test two-tailed, left-tailed, or right-tailed?Right tailed testTwo-tailed testLeft-tailed testb. What is the test statistic?The test statistic is(Round to two decimal places as needed.)c. What is the P-value?The P-value is(Round to three decimal places as needed.)d. What is the null hypothesis and what do you conclude about it?Identify the null hypothesis.O A. Ho: p = 0.91Click to select your answer(s).

Solution From given output a) Two tailed test. b) test statistic Z=-3.24 c) The p-value is 0.001 d)…

A poll of 2,055 randomly selected adults showed that 89% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p = 0.91 vs p#0.91 Sample X 1828 Sample p 95% CI Z-Value P-Value 2.055 0.889538 (0.871726,0.907349) - 3.24 0.001 a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Two-tailed test Left-tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed.) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis. O A. Ho: p=0.91

A poll of 2,055 randomly selected adults showed that 89% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p = 0.91 vs p#0.91 Sample X 1828 Sample p 95% CI Z-Value P-Value 2.055 0.889538 (0.871726,0.907349) - 3.24 0.001 a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Two-tailed test Left-tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed.) c. What is the P-value? The P-value is (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis. O A. Ho: p=0.91

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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